A. S. Packard, Jr., on Insects inhabiting Salt i 



107 



vliiti^ 



whitish. Hemelytra pale yellowish, the costal a 

 the cross-nervule and a spot at tip brown ; clavus at base with 

 short, narrow brown lines running transversely from the outer 

 and inner margins, beyond the middle to tip the hues run com- 

 pletely across ; lines of the corium transverse, slender, slightly 

 waved, many of the intermediate ones entire ; membrane pale 

 brown, with short, vermiculate, white lines. Venter and meta- 

 sternum faintly dusky, the connexivum and genital segments 

 whitish. 



Length 4^ millims. Breadth across the pronotum 1^ millims. 

 This species must be closely related to C. Burmeisterit Fieber, 

 of Europe. The shape of the palse and markings of the heme- 

 lytra of our species do not agree with Fieber's description. 

 The specimen described is a male, which appears not to be fully 

 mature. From Clear Lake. 



Mabine Insects fbom deep water. 



During his explorations at Eastport the past summer. Prof. 

 Verrill dredged at the depth of 20 fathoms in Eastport harbor a 

 larva of Chironomus oceanicus Pack. (Proc. Essex Inst, vol. vi, 

 p. 42). It does not differ from specimens found by me at low- 

 water mark in Salem harbor. It is evidently the same as the 

 supposed larva of Micralymma f, mentioned and rudely figured 

 in the American Naturalist, vol. ii, p. 278, found by me many 

 years ago at low-water mark in Casco Bay. It is of the same 

 size as the Salem specimens, being -25 inch in length. 



Thalassarathna Verrillu n. sp. (Fig. 5 ; a, head and mandibles 

 and maxillary palpi ; c, under side ; d, anterior claw. — This 



species diffei-s in important particulars from our best known 

 species, Hydrachna forraosa Dana and Whelpley (Amer Journ. 

 Sci, XXX, 354, 1836), found near New Haven, m .rosh water 

 Unionida. The body of that species is much longer, the 



