16 PROCEEDINGS OP THE ACADEMY OF 



an angle in the centre and attached to the outer parts at their other extremi- 

 ties. These outer articles are formed each as follows : First, There is a 

 large plate which is bent around an inner basal piece, and is deeply notched 

 laterally, but is produced anteriorly into a broad almost rudely punctate plate, 

 and posteriorly into a short, slender process, terminating in an imperfect 

 hook. This last process is sometimes obsolete. Second, Articulating with 

 the inner basal piece, alluded to, there exists a large, strongly-curved, acute 

 hook or claw, whose distal extremity is subcylindrical. The female genital 

 appendages are small, and are composed on each side of a very thin plate and 

 a process about a line in length, irregularly prismatic in shape proximally ; 

 but distally excavated suddenly, so as to be flattened for the remainder of 

 its course. 

 Hah. California. Smithsonian Institution. 



S. ANGDSTICEPS. 



S. niger, lateribus brunneo maculatis ; capitis superficie antica angusta, 

 longa, supra nigra, infra albido-brunnea ; antennis ? ; segmentis 75 ; 



scutis et infra et supra distincte canaliculars ; squama anali triangula. 



The color of this species is black, with a brown band on the sides, in 

 which is a black dot marking the position of the lateral pores. The lower 

 portion of the head is very light-brown, and has its margin rather deeply 

 emarginate. Along the posterior cephalic border is a somewhat crescentic area, 

 which is nearly smooth and is medianly canaliculate, adjoining this the surface 

 suddenly is rudely punctate, but gradually becomes smoother. The eyes are 

 arranged in three transverse rows, the posterior being much the longer. The 

 first scutum is copiously coarsely punctate, and is posteriorly slightly cana- 

 liculate on the dorsum, but distinctly so on the sides. The lateral processes, 

 even in the female, are very small, the second scutum being produced for- 

 wards so as to abut on the head. The posterior subscuta are on the dorsum 

 closely, rather deeply, and more or less obliquely canaliculate, but on the sides 

 less distinctly and more distantly so. The anterior subscuta are very distantly 

 and much more lightly and obliquely canaliculate, and are also more closely 

 channeled below than above. The surface of the anal scutum is irregularly 

 and minutely corrugate. We have seen but one specimen, a female. The 

 female genital appendages appear to consist of two conoidal bodies coalescing 

 at their bases and united together towards their apices by a broad plate, so 

 placed as to present towards them an inclined surface. Into the base of these 

 pyramidal processes fit other somewhat prismatic bodies, with their thin edge 

 formed of several pieces. 



Length A\ inches. 



Hab. San Francisco. Smithsonian Institution. R. D. Cutts. 



Notes of Botanical Visits to the Lower Fart of Delaware and the Eastern 



Shore of Maryland. 



BY WM. M. CANBY. 



The peninsula lying between Delaware and Chesapeake Bays has been al- 

 most a terra incognita to botanists ; although, from its geographical position, 

 and from the varied character of the country, embracing great variety of soil, 

 salt and fresh water marshes and rivers, large swamps, and a considerable 

 extent of coast, it might well be supposed to be a fine botanical district. 



In this expectation, the writer, (sometimes accompanied by botanical 

 friends,) made.short visits to a few places in the counties of Sussex, in Delaware, 

 and Worcester and Somerset, in Maryland, during the months of September and 

 October last. Taking into account the lateness of the season and the limited 



[Jan. 



