"WE 



-OF THE- 



UraoMtw i^utamolaqiciil 9 acietn. 



VOL. II. BROOKLY N, AUG . 1879. NO. 4. 



List of the 

 des3rib3i coleopterous larvae of the United States. 



(continued) 



HYDROPHILIDJE. 



The larva; of this family differ from those spoken of before by 

 having- but one claw on their feet (sometimes even wanting). 



Head flat above, slightly convex beneath, easily bent upwards. 

 antennae in front, filiform, three jointed, the first joint the longest : 

 ocelli six (some only five); mandibles falcate ; maxillae palpiform, 

 interior mala wanting, eight or nine abdominal segments, stig- 

 mata eight. The abdominal segments are coriaceous, and so much 

 wrinkled, that the number can by given only by counting the stig- 

 mata, bot not in such a degree, as given by Le Baron, etc. 



They live on water-snailes, which they suck, having an exceed- 

 ingly small mouth and no opening at the tip of the mandibles. 

 No N. A. Hydrophilid larva has been described. ' 



STAPHILINIDJ^. 



These larvae resemble very much those of the Carabidae, but dif- 

 fer by having but one claw and but four ocelli on each side. 



Head horizontal, somewhat convex above and flat beneath. 

 Antennae in front, four jointed, the third has at the inner side an 

 inserted process. The mandibles are sharp, simple, arcuate ; max- 

 illae moderately long, basal joint short and stout, and cardinal 

 piece long, cylindrical ; nine abdominal segments, and nine spir- 

 acles on each side ; the last abdominal segment has a forklike ap- 

 pendage. They are very active and strong and live on other lar- 

 va' and soft insects, the smaller species live on fungi. 



