SPIROBOLUS. 
g’. Median and posterior portions of dorsal area of terga punctured 
and striolate, especially adjacent to the transverse sulcus; 
posterior inferior angle of second tergal plate obtusely rounded, 
the inferior edge oblique. 
ih. Antenne and legs yellow; sculpturing coarser 
fh’. Antenne and legs fuscous ; sculpturing finer. . . . . . 
79 
fossulifer, sp. n. 
amulensis, sp. n. 
Unfortunately Saussure and Humbert did not describe or figure the copulatory 
apparatus of the species recorded in their monograph, and in only three of the forms 
known to me are males available for dissection. These three differ markedly from 
each other in the structure of these organs, as the following tabulation attests :— 
a. Sternal plate strongly arched, deeply concave above, much deeper in the 
middle than at the sides; anterior lamina of the coleopod mesially 
shallow, &c. oe . . 
. Sternal plate transverse, shallowly concave above, of er even depth throughout; 
anterior lamina of coleopod large, deeper in the middle than at the 
sides, &c. 
6. Posterior lamina of coleopod distally bifurcate ; inferior processes of 
anterior lamina longer, a distinct semicircular emargination near the 
base externally. . 2. 2. 2. 2. ww ee ee re 
6’. Posterior lamina of coleopod with curved undivided inferior angle; 
inferior processes of anterior coleopod shorter, no emargination 
externally near the base . 
fossulifer. 
godmani. 
stolli. 
So far as I can judge from the published descriptions of the anterior legs of the 
males, the species in which this sex has been examined may be distinguished by 
the structure of these appendages as follows :— 
a, Coxe of the legs from the fourth to the seventh pairs furnished with long 
apophyses, which equal in length the sum of the two succeeding 
segments . 2. 6. 6 2. ew ew ew ew ww ee ew ee mystecus, Sauss., ? eximius, Porat. 
a‘. When coxal apophyses are present on the fifth, sixth, and seventh legs 
they are shorter than the sum of the two succeeding segments of these 
limbs. 
6. Coxal apophyses of legs from the fourth to the seventh pairs lamelliform 
and apically bifid . . . 
b'. Coxal apophyses of all the legs apically ¢ entire. 
c. Coxal apophysis well developed only on third leg, where it forms a 
downwardly curved process . 
. Coxal apophysis of third leg not larger than that of the fourth and 
fifth, and flat. 
d. Coxal apophyses of all the legs very short, those of the third sub- 
equaltotherest . . . 1 1. ww ee ee ee 
tepanecus. 
fossulifer. 
stolli. 
L 2 
