14 



domlnal appendages of the male, and in the general markings of the 

 whole body ; and as this species from the Gulf of Georgia is found to 

 be most closely allied to the Raphidophora of the shallow cave, so that 

 from California, in the minutiae of its structural peculiarities, reminds 

 us of that from the deeper cave ; this will be seen in the shape and com- 

 parative size of the basal joints of the antennae, in the compressed termi- 

 nal joint of the maxillary palpus, as well as in its interior split, and in the 

 length and slenderness of the legs ; whilst in the tubercle of the vertex, 

 in the shortening of the meso- and metanotum, and in the proportional 

 length of the four anterior femora to the tibiae, R. subterranea even 

 approaches the genus to which xanthostoma belongs. 



The Javanese species, R. loricata, Burm. (according to Serville's 

 description), differs from all our species, in the form and comparative 

 size of the terminal joint of the maxillary palpi, in the coxse of me- 

 sothorax, in the terminal sjiines of the four anterior femora (from 

 which characteristic Serville derives the generic name), in the charac- 

 ter of the terminal spines of posterior tibiae, in the non-compressed 

 form of tarsi, and the presence of spines upon their first joint, and (in 

 most) in the comparative length of the cerci. 



From the European species, R. palpata^ Charp., and R. cavicola^ 

 Fiscb., ours differ mostly in the form and comparative size of the 

 ovipositor, and I might add also in the general structure of the 

 abdominal appendages, were it not certain that Fischer's description 

 of these parts was taken from di'ied specimens, which could not exhibit 

 their true character. 



Note. In my comparisons I have made frequent mention of it. 

 macidata, Harris, which is mentioned in the synonymical table as the 

 same as it. lapidicola, Burm. I have not used the latter name, 

 because I am sure that the insects before me were the it. macidata., 

 Harr., while I am not equally confident that they were the it. lajndi- 

 cola, Burm. 



Descriptions of Shells collected by the North Pacific 

 Exploring Expedition. By Dr. A. A. Gould, (continued.) 



Tectarius luteus. T. parva, biconica, lutea, epidermide cal- 

 carea incrustata, lineis incrementi tenuibus et lineis volventibus 

 minutissimis antrorsum crescentibus reticulata ; anfr. 7, conicis, acute 

 carinatis, ad suturam imbricantibus et subnodulosis : apertura rhom- 

 boidea ; labro acuto ; columella callo erecto induta Axis, 6 -|- ; diam. 

 4 millim. Inhabits China Seas. W. S. 



A curious little shell which I was at a loss at first where to place ; 

 but, on the whole, do not hesitate to place it under this genus. 



Sigaretus lucidus. T. parvula, depressa, Candida, tenuis, 

 lineis incrementi et striis volventibus reticulata ; anfr. 3 + , apice e 

 margine remoto, regione umbilicali eoncavo, calloso, nunute perfbrato ; 



