ART. 14 THE BEETLE FAMILY PSEUDOMOBPHIDAE NOTMAN 23 



3. Antennae filiform, subsetaceous. Labrum more transverse. 



* lutea Westwood. 

 Antennae stout ; joints 5-9 moniliform. Labrum about as long as wide — 4 



4. Form ovate. Disk of the thorax strongly sulcate. Elytra feebly striate. 



Size smaller, 3 mm * monilis Westwood. 



Form longer and more parallel. Elytra with sides nearly straight. Thorax 

 with disk feebly sulcate. Elytra more distinctly striate. Size larger, 

 4.5 mm * obockiana Fairmaire. 



Genus SILPHOMORPHA Westwood 



The species of this genus seem especially difficult to separate. A 

 specimen of Silphomovpha difflciUs Blackburn which had been com- 

 pared with the type was obtained through the kindness of G. J. 

 Arrow, of the British Museum. Such other species as could not be 

 identified in the material at hand are marked with an asterisk in the 

 following synopsis. Complete description of none of the species 

 has been attempted. 



KEY TO SPECIES OF GENTS SILPHOKMORPHA WESTWOOD 



1. Thorax very wide, abotit three times as wide as long 2 



Thorax narrower, about twice as wide as long 5 



2. Thorax absolutely smooth 3 



Thorax minutely punctate 4 



3. Form broader. Elytra more shining. Striae more prominent apically. 



Thorax black * laticollis MacLeay. 



Form less broad. Elytra less shining. Striae uniform. Thorax with 

 piceous margins froggatti MacLeay. 



4. Elytra with the striae strong striatipennis MacLeay. 



Elytra with the striae nearly obsolete. Thoracic margins broader and 



piceous in color * obsoleta MacLeay. 



5. Thorax larger, broader than the elytra * denisonensis Castelnau. 



Thorax not broader than the elytra 6 



6. Head larger. Its width about one-half the total length of the beetle. 



Eyes prominent * boops Blackburn. 



Head smaller. From a third to a fourth the total length 7 



7. Elytra very indistinctly striate 8 



Elytra more or less strongly striate 16 



8. Elytra absolutely smooth 9 



Elytra punctate 13 



9. Side margins of thorax and elytra paler, reddish * laevis Castelnau. 



Side margins not paler , 10 



10. Form oblong. Thorax with the sides more arcuate. Beneath dark brown. 



Size large, 10 mm * grandis Castelnau. 



Form oval. Thorax and elytra with sides more continuous. Underside 

 more or less pale 11 



11. Form, more elongate. Size larger, 9 mm. Abdomen dark with apex broadly 



pale * westwoodi, new name. 



Form short oval. Size smaller, 5-6 mm. Underside entirely pale 

 castaneous 12 



