294 



2. A. jyilosulus. 



Ahjdus pilosidws, H.-Schf., Wauz. Ins. viii, 101, fig. 870; Dallas, Brit. Mus. List 

 JHemipt. ii, 478, No. 28. 



Inhabits Texas, Indian Territory, Iliiuois, i^ew England, Maryland, &c. 



This species is quite distinct from the preceding in the acuteness of 

 the lateral angles of the pronotum and in the spines of the femora, 

 besides the more slender form and paler colors. 



3. A. pluto. 



Alydus pluto, Ubler, Hayden's Survey of Montana, 401, No. 2. 



Inhabits Colorado, Texas, Louisiana, Idaho, and Kansas, 

 One specimen from the foot-hills, by Lieutenant Carpenter 5 also sev- 

 eral from near Denver City, sent to me by B. H. Smith. 



ToLLius, Stal. 

 T. curtulits. ► 



Alydus curtnlus, Stal, Eufreniea Rasa, Ins. 234, No. 37. 

 Tollius Gurtulus, Stal, Enumeratio Hemipt. i, 213. 



Inhabits California. 



A single specimen received from James Behrens, San Francisco. 



Megalotomus, Fieb. 

 M. quinquespinosus. 



Lygceus 5-spinosm, Say, Journ. Acad. Phila. iv, 323, No. 4. 



Alydas crueiitus, H.-Schf., Waaz. los. viii, 100, ii^f. 833. 



Megalotomus quinquespi)iosus, Stiil, Eaumeratio Hemipt. i, 214, No, 4. 



Inhabits Colorado. Collected on the foot-hills by Lieutenant Car- 

 penter. 



The only specimen collected by the expedition deviates a little from 

 the form usual to the Atlantic region, but does not offer characters of 

 sufficient importance to make it a different species. 



Hyalymenus, Amyot & Serv. 

 H. tarsatus. 



Alydas tarsatus, Fab., Syst. Rhyuo-. 250, No. 9. 

 Alydus recun-us, H.-Schf., Wanz. Ins. viii, 98, fig. 866. 

 Alydus pallens, Dallas, Brit. Mus. List Hemipt. ii, 476, No. 20. 



InhalDits California, West Indies, Mexico, Cape Saint Lucas. Col- 

 lected by John Xanthus. 



Stachyocnemus, Stiil. 

 S. apicalis. 



Alydus apicalis, Dallas, Brit. Mus. List Hemipt. ii, 479. 

 Stachyocnemus apicalis, Stal, Enumeratio Hemipt. i, 215. 



Inhabits California, Texas, and Florida. 



Subfamily LEPTOCOEISINA. 



Leptocorisa, Lat. 

 L. tipuloides. 



Cimex tipuloidfs, De Geer, Mem. iii, 3.54, pi. 35, fig. 18. 

 Myodocha iipuloides, Lat., Gen. Crust, et Ins. iii, 126. 

 Myodochus tipuloides, Oliv., Enc. Method, viii, 106, No. 2. 



Leptocorisa tipuloides, Amyot et Serv., Hist, des Hemipt. 229, No. 1 J Sfcoll, Pu 

 naises, fig. 162. 



Inhabits Texas, Mexico, and Central America. 



