184 MODERN SYSTEM, 



Sp.l. Onfh. strialus. Payk., Monogr. Hist. 100. t. 11./. 1. 



Inhabits dung. 



Stirps 2. — Bo(/i/ depressed: tibia hroad: ^ar^i short: «to'nw?w dilated, 

 the fore part forming a cavity for the head, which is capable of be- 

 ing retracted even to the mandibles. 



A. Tihitt, the four posterior with two series of spines. 



Genus 130. ULSTER of authors. 

 Btnli/ above nearly convex : thorax with the anterior part straight. 



A. Elytra with the outer stria; extending their whole length. 



a. Thorax with the sides striated, the striae extending their 

 whole length. 



* Elytra with marginal stria. 



Sp. 1. Hist.unicolor o^ authors. 

 Inhabits dung. 



** Eh/tra without the marginal strips. 



Sp. 2. Hist, sinuatus. llliger. A-macnlatus. Marsh. 



b. Thorax with the sides not striated. 

 * Elytra with no marginal stria. 

 Sp. 3. Hist. parvus. Marsh., Leach. 



** Elytra with a marginal stria. 

 Sp.l. Hist. purpurascens. Fabr., Leach. Hist, hipustulatus. Marsh. 



B. Elytra with the external stria; abbreviated. 



Sp. 1. Hist, nitidulus. (P/. 2. Jig. 1. a., antenna mugnified.) Fabr., Leach, 

 — Hist, scmipunctatus. Miirsh. 



B. Four posterior tibia with only one row of spines. 



Genus 137. DEINDROPHILUS. Leach's Zool. Misc. yo\. iii. 

 Body with the upper part nearly convex : thorax short, the anterior part 



straight. 

 Sp. 1. Den. puncfatKS. 

 Hister punctatus. Ent. Heft. 



Genus 138. PLATYSOMA. Leach. 

 Body with the ii})per part plain : thorax transverse or nearly equall 

 quadrate. 



* Elytra zcitkout stria. Body finely punctured. 

 Sp. 1. Plat, picipes. Leach. H. piscipes. Fabr. 



** Elytra without external stria. Body not punctured, 

 Sp. 2. Plat.favicoruis. Leach. H.flavicornis. llerbst. 



